US 11,746,975 B2
Operating a lighting module with LED elements
Jürgen Mertens, Wuerselen (DE); Harry Gijsbers, Heerlen (NL); Astrid Marchewka, Aachen (DE); and Benno Spinger, Aachen (DE)
Assigned to LUMILEDS LLC, San Jose, CA (US)
Filed by Lumileds Holding B.V., Schiphol (NL)
Filed on Jun. 18, 2019, as Appl. No. 16/444,368.
Claims priority of application No. 18178444 (EP), filed on Jun. 19, 2018.
Prior Publication US 2019/0383460 A1, Dec. 19, 2019
Int. Cl. F21S 41/147 (2018.01); F21S 41/663 (2018.01); F21S 45/47 (2018.01); F21S 41/32 (2018.01); B60Q 1/14 (2006.01); H05B 45/10 (2020.01); F21Y 115/10 (2016.01)
CPC F21S 41/147 (2018.01) [B60Q 1/1415 (2013.01); F21S 41/32 (2018.01); F21S 41/663 (2018.01); F21S 45/47 (2018.01); H05B 45/10 (2020.01); F21Y 2115/10 (2016.08)] 16 Claims
OG exemplary drawing
 
1. A lighting system, comprising:
a lighting module including a rigid heat sink;
a first LED element direclty mounted on the heat sinkin in a backward facing orientation, the first LED element being disposed and arranged such that light emitted therefrom in operation is emitted from the lighting system as a low beam pattern;
a second LED element directly mounted on the heat sink in a backward facing orientation, the second LED element being disposed and arranged such that light emitted therefrom in operation is emitted from the lighting system as a high beam pattern,
the heat sink being configured to maintain the first LED element and the second LED element in a symmetrical configuration configured to maintain the backward facing orientation of the first LED element and the second LED element;
a driver circuit electrically connected to the first LED element and the second LED element to selectively supply electrical power for operation thereof by:
in a first mode, operating the first LED element in a high power state, while the second LED element is turned off, to provide a low beam illumination, and
in a second mode, operating the first LED element in a dimmed state, while operating the second LED element in a high power state, to provide a high beam illumination.